Giuliani wrote this on his Twitter account.
«Budapest, Kyiv, Vienna. After hundreds of hours & months of research, I have garnered witnesses & documents which reveal the truth behind this impeachment, which includes no wrongdoing by Donald Trump," he wrote.
Giuliani illustrated his tweet with footage from a documentary that justifies Trump's actions.
According to Giuliani, evidence revealed that "corruption in 2016 was so extensive it was POTUS's duty to ask for US-Ukraine investigation." The impeachment, he said, served as a cover-up for Democrats.
"Extortion, bribery & money laundering goes beyond Bidens," Giuliani wrote.
"Also, DNC collusion with Ukraine to destroy candidate Trump," he added.
Witness Viktor Shokin, according to Trump's lawyer, has evidence confirming money laundering by Burisma and Bidens.
"[Shokin] fired due to VP Biden's threat not to release $1B in vital US aid," Giuliani wrote. "Shokin's med records show he was poisoned, died twice, and was revived. Lots of heads will roll in Ukraine if this opens up," he added.
"Witness Yuriy Lutsenko, inheritor of Shokin's office: Records proving Amb Yovanovitch perjured herself at least twice," Giuliani said.
According to him, the documents show that former U.S. Ambassador to Ukraine Marie Yovanovitch "was denying visas to witnesses who could prove Biden & Dem corruption." "Clear doc proof of money laundering by Burisma & Bidens," Giuliani tweeted.
"Dem's impeachment for innocent conduct is intended to obstruct the below investigations of Obama-era corruption: billions of laundered $; billions, mostly US $, widely misused; extortion; bribery; DNC collusion with Ukraine to destroy candidate Trump," he wrote.
On December 4-6, Giuliani met with former Ukrainian Prosecutors General Yuriy Lutsenko and Viktor Shokin, MPs Oleksandr Dubinsky and Andriy Derkach, a former employee of Ukraine's Embassy in the United States, Andriy Telizhenko, as well as other persons.
Giuliani said he was involved in the production of a documentary that should refute the accusations of Democrats against Trump. After traveling to Ukraine, he said he had collected a lot of useful information to protect the U.S. president from impeachment.